Patents Assigned to SERELA
  • CARD SHARING COUNTERMEASURES
    Publication number: 20130031576
    Abstract: A method for identifying of at least an identifier of a conditional access card used in a control word redistribution system by passing information over a side channel, said method comprising a modification step of the response time, of the card, to a control word request, according to a predefined function which depends on the identifier of the said cards.
    Type: Application
    Filed: November 25, 2009
    Publication date: January 31, 2013
    Applicant: SERELA
    Inventor: Olivier Koemmerling